Research Article
Benthic Macroinvertebrates along the Haraz Downstream in Southern Caspian Sea Basin: In Gradient of the Physicochemical Parameters
Table 1
Mean values (±standard deviation) of the physicochemical parameters.
| | Site 1 | Site 2 | Site 3 |
| Dissolved oxygen (mg/L) |
4.47 ± 0.36a | 4.10 ± 0.48ab | 3.84 ± 0.41b | Fecal coliforms (cfu/100 mL) | 19.77 ± 19.43a | 78.82 ± 41.07b | 181.06 ± 83.04c | pH | 8.02 ± 0.09a | 7.95 ± 0.10a | 7.82 ± 0.17a | Temperature (°C) | 22.69 ± 5.05a | 23.21 ± 7.84a | 24.08 ± 6.30a | BOD5 (mg/L) | 14.15 ± 7.22a | 35.69 ± 19.01b | 50.06 ± 17.13b | Nitrate (mg/L) | 2.41 ± 0.96a | 3.59 ± 1.22ab | 4.34 ± 1.07b | Phosphate (mg/L) | 0.06 ± 0.02a | 0.12 ± 0.04b | 0.11 ± 0.04b | Turbidity (NTU) | 365.25 ± 116.47a | 344.16 ± 96.52a | 298.65 ± 153.94a | Total solid (mg/L) | 614.40 ± 231.61a | 578.26 ± 219.75a | 564.76 ± 341.02a | Water flow (m3/s) | 7.82 ± 2.01a | 4.49 ± 1.73b | 0.67 ± 2.19c |
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Letter case (superscript): variation among sites.
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